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Title:
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Differences in the crystal structures of two dialkyl diester triphenyl-phosphonium ylids |
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Author:
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Castañeda, F.; Jullian, Carolina; Bunton, Clifford A.; Garland, María Teresa; Baggio, Ricardo
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Abstract:
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Hydrogen bonding and crystal packing play major roles in determining the conformations of ethyl methyl 2-(triphenyl-phosphoranylidene)malonate, Ph3P=C(C02CH3)CO2CH2CH3 or C24H23O4P,(I), and dimethyl 2-(triphenylphosphoranylidene)malonate, Ph3P=C(CO2CH3)2 or C23H21O4P,(II). In (I), the acyl O atom of the ethyl ester group is anti to the P atom, while the O atom of the methyl ester group is syn. In (II), the dimethyl diester is a 1:1 mixture of anti-anti and synanti conformers. |
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URI:
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http://www.captura.uchile.cl/handle/2250/6424
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Date:
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2007 |
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dc.identifier.citation:
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ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS 63:o267-o270 |